Machine: K40 (originally with m2Nano)
Problem/ Question: Laser Not Firing
I installed the Cohesion3D Laserboard and had everything working properly for several days. Then the laser stopped firing. Everything else about the board still worked (ie, it controlled all X-Y-Z movements appropriately).
I have since re-installed the original m2Nano and all movements and laser firing works using K40 Whisperer.
See below for pictures and troubleshooting steps.
Picture of Original m2Nano board from my K40
Picture of my Cohesion3D board installed in K40 with LED lights on:
Picture of my Cohesion3D board with Laser Fire LED light on (X-Y-Z axis all move, but laser not firing):
Picture of my laser firing with manual test buttonnto prove that the laser still works:
I followed the troubleshooting steps from your website and had no luck resolving the issue.
disconnect the large plug from the LaserBoard, and check continuity on the Laser Fire and Laser Gnd pins on the LaserBoard while the G1 command is running and the red “laser fire status” LED on the LaserBoard is on, there should be some continuity shown on the meter.
Testing the laser fire terminals for continuity, I measured zero continuity with laser idle and with laser firing commanded (the LED in the control panel turned red, but the laser did not turn on)
Issue test command = G1 X10 S0.8 F600
my result = laser moved but did not fire
If you would, disconnect all the laser cables from the board (the SD Card, power brick, and USB cable should remain connected), put your multimeter into continuity mode, and touch the red and black probes as shown here where the red and black wires connect:
When you send the G1 X10 S1 F600 line is there continuity? my test result = no continuity